Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"nang dau den snippets" » "hang dau den snippets", "xang dau den snippets", "nang du den snippets", "nang dau dien snippets", "nang dan den snippets", "nang cau den snippets"
"locating bug code snippets" » "locating bung code snippets", "locating bugs code snippets", "locating bug core snippets"

Try widening your search to All Fields.

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (((("nang dau den snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("nang dau den snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( nang dau den snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("nang dau den snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.